Gabardine exterior and ripstop lining.Top zip closure.3 main compartments.The FlexVent ™ suspension system.Side bungee cords allow for compression Stand-up design for easier packing and unpacking.External, fleece-lined pocket for sunglasses, phone or keys Protective, dedicated 16'' laptop compartment.Removable waist belt.Measures approx 12" W x 19" H x 6.5" D